The total number of days taken to make the batch of pens is 22.
<h3>What is Linear Expression?</h3>
An equation that has the highest degree of 1 is known as a linear equation. This means that no variable in a linear equation has an exponent more than 1.
Based on the given conditions, formulate: 8 + 20 - 8 X 9 ÷ 12
Calculate the product or quotient: 8 + 20 - 72/12
Cross out the common factor: 8 + 20 - 6
Calculate the sum or difference: 28 - 6
Calculate the sum or difference: 22
Thus, the total number of days taken to make the batch of pens is 22.
Learn more about Linear Expression from:
brainly.com/question/819568
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